UN Staff Regulations vs Staff Rules explained

An offer letter cites a staff rule number. An appeal to the UN Dispute Tribunal turns on whether a decision followed “the Regulations and Rules.” An HR officer says a request “isn’t provided for under the current ST/AI.” None of this is explained anywhere in the application process, and most candidates never learn the difference until they need it — usually during a dispute. This guide lays out the actual hierarchy: who writes each layer of UN employment law, how binding each layer is, and where to find the version that applies to you.

Why this hierarchy matters before you need it

Every entitlement covered elsewhere on this site — contract types, allowances, leave, appraisal, separation, the appeals process — is not a matter of custom or agency goodwill. It is set out in a specific, numbered instrument, and the instrument that applies determines how firm the entitlement is and how it can change. Knowing the difference between a Staff Regulation and a Secretary-General’s Bulletin will not win an argument with HR by itself, but it tells you whether what you are being told is a General Assembly-level rule, an administrative procedure that can be updated without much notice, or an internal guidance note with no binding force at all.

Where it starts: Article 101 of the UN Charter

The legal chain begins with Article 101 of the UN Charter itself, which gives the Secretary-General authority to appoint the staff of the Secretariat “under regulations established by the General Assembly” and states that the paramount consideration in employment is securing the highest standards of efficiency, competence and integrity, with due regard to recruiting on as wide a geographical basis as possible — the source of the desirable range system covered elsewhere on this site. Everything below is built on that one sentence of the Charter.

Staff Regulations: set by the General Assembly

The Staff Regulations are the broad statement of the fundamental conditions of service and the basic rights and obligations of the Secretariat — organized into chapters covering duties, obligations and privileges; classification of posts and staff; salary and related allowances; appointment and promotion; annual and other leave; social security; separation from service; and staff relations. Because the General Assembly itself approves and amends the Staff Regulations, they carry the most weight in the hierarchy and cannot be changed by the Secretary-General alone — any amendment goes back to the Assembly.

Staff Rules: issued by the Secretary-General

The Staff Rules implement the Staff Regulations in detail, provision by provision, and are promulgated by the Secretary-General under authority the Regulations themselves delegate for that purpose. This is the layer most staff actually encounter day to day — the specific rule numbers cited in an offer letter, in a leave policy, or in a disciplinary or appeal case, most often set out in a Secretary-General’s Bulletin (see below). Because the Secretary-General issues them, Staff Rules can be amended more readily than the Regulations they implement, though changes are reported to the General Assembly and must stay within what the Regulations actually authorize — a Staff Rule cannot grant an entitlement the Regulations do not provide for.

Administrative Instructions and Information Circulars: the operational layer

Below the Rules sits a further, more frequently updated layer. Administrative Instructions (ST/AI) set out the detailed procedures for applying a Staff Rule — how to actually request an entitlement, which office handles it, what documentation is required — and are the level most likely to be revised as systems and processes change. Information Circulars (ST/IC) sit a step further down again: administrative announcements and guidance that convey information or remind staff of an existing rule, without creating new binding obligations. When something “used to work differently,” it is very often an ST/AI-level procedure that changed, not the underlying Staff Rule or Regulation.

Secretary-General’s Bulletins (ST/SGB): the promulgation vehicle

A Secretary-General’s Bulletin (ST/SGB) is the formal instrument the Secretary-General uses to promulgate Staff Rules, along with broader organizational and policy directives — the Secretariat’s organizational structure, its programme of work, and standalone policy statements (workplace harassment policy, whistleblower protection covered in the whistleblower guide, and similar organization-wide policies). A single bulletin can both amend the Staff Rules and set out policy in the same document, which is part of why the ST/SGB series is worth recognizing on sight rather than treating as generic paperwork.

Where this actually shows up in a UN career

The hierarchy is not academic once you are inside the system. A contested performance rating cited in the appraisal guide, a disciplinary case, or an appeal to the UN Dispute Tribunal covered in the internal justice guide will typically turn on whether a specific decision correctly applied a specific Staff Rule, and whether that Rule itself is consistent with the Regulations behind it. An ethics or conflict-of-interest question in the ethics guide is usually grounded in a specific Staff Regulation on conduct. Recognizing which layer a rule sits at tells you, in practice, whether a change is likely to be negotiable at your level (an ST/AI procedure) or something only the General Assembly can alter (a Regulation).

How to actually find and read these documents

The consolidated Staff Regulations and Staff Rules booklet is published publicly by the UN and is worth reading once in full rather than only when a specific question comes up — search for the current “Staff Regulations and Rules of the United Nations” publication on the UN’s own document repositories. Once you are a staff member, ST/AIs, ST/ICs and ST/SGBs relevant to your day-to-day work are distributed and archived through internal Secretariat systems that are not publicly accessible; HR or your staff association, covered in the staff associations guide, is the right first stop when you need the current text of an instrument rather than a paraphrase.

A note on funds, programmes and specialized agencies

This exact hierarchy — Charter, Regulations, Rules, Administrative Instructions, Bulletins — is the UN Secretariat’s own framework. Funds and programmes and the specialized agencies covered in the system structure guide each have their own governing bodies and their own equivalent staff regulations and rules, generally aligned in spirit and often in near-identical wording under the UN common system, but formally separate instruments — a UNHCR or UNICEF staff rule is not the Secretariat’s ST series, even where the substance matches closely.

Understanding this hierarchy will not change what a vacancy pays or how a selection panel scores your interview, but it does change how confidently you can push back when something in an offer or a decision does not look right. Every current vacancy across the UN system, the development banks, EU institutions and INGOs is searchable on the board, and a free changemaker profile keeps your applications organized while you build that fluency.